Draft and buffing apparatus.



PATPNTPD JUNE 18. 1907. s. P. BUSH. DPAPT ANP PUPPING APPARATUS.

' APPLICATION FILED MAY 11. 1906.. v

l3 SHEETS-SHEET 1.

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PATENTED JUNE 18, i907.I :Si Pl 'DRAFT AND BUPPING APPARATUS.

APPLICATION FILED MAY 1]? 1906- L .afl L5.. 7

vWITNESSES Y l 6 \v T t /a J 1 l I i "PATENTBD JUNE 1a, 1907'.

S. P. BUSH. DRAFT AND BUPPING APPARATUS.

I APPLICATION FILED MAY 11. 1906.

3 SHEETS-SHEET 3..

UNITED srArEs PATENT OEErOE.

SAMUEL r. BUSH, or COLUMBUS", onio.

DRAFT ANDBUFING APPARATUS.

Application filed May`11, 1906. Serial 110.316,40. I

To @ZZ whom/ it may concern.;

Be it known that I, SAMUEL l. BUSH, a resident of Columbus, inn the county of Franklin and State of Ohio,- liave invented certain new andy useful Improvements in Draft and Bufiing Apparatus; and l dohereby declare the following to be -a full, clear, and exact description of the invention, such as willeiiable others skilled in the art to which it appertains .to make and -use the4 same.I `My invention vcntion being .to'provide improvements of this characterJ comprising few and simple parts, which shall be easyand cheap to construct,.strong and. durable in use, universal in application andvery accessible.

i A further object is to provide an improved draft and buiiing'ap aratus whichwill be direct in action and o superior .to indirect wedge acting friction devices suchasheretofore known, and 'having a small reaction isy superior to strictly spring devices, at the same time having all the facilities formodifying or absorbing shocks between cars, as: possessed by either or both the Ordinar v spring and friction devices.

iiivention'consists in certain novel features of construction and' combinationsand arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in side elevation withdraftiron removed, illustrating my improvements. ig.

.2 is a view iii-cross section on the line mthereof. Fig. '3 is a viewV in crosssectionthroughtlie followers, and Figsl and 5 are views of afmodification. Figs.` 6 and 7 1 are;- views showing the.. positions 'of the parts .atv

different stages during thebuffin'g action. r

1 re resents the butt end'of a carconpling,

approved manner.

to -whichthe yoke strap; 2 -is 'secured in any' 3, 3 represent the parallel'draftironslhavf ing carrying irons 4, 4 secured thereto,

forming, supports for lthe yoke 2 aiidfollowers, as will'beherinafter pointed: out. u'

5 ando representa pair of pivoted or ifuif ofthe yoke` a similar pair being located'at -therear end of the yoke, the rear follower 5 bearingagain'st fthe rear end- 'of the'yoke 24;

and the forward 'followerf-bearin against the bntt end of the coupling. f Theiin'ierfol#A Specification of Letters Patent.

relates to an improved draft I andfbnfling apparatns, the object of the wah nies@ and other Objects' inviewahe" lshown in Fig. '1.

crumed followers Alocated at the forward end.

recenter .nine is, i907.

lowers 6 are made wi'tlilugs 7projectiiig into the ends of a coiled spring 8, and the pairs of followers 5 and 6. having frictional engage- 'ment `with eacli other. of the followers 5 and 'are'niade with V- shaped grooves to increase the friction and the wearing surface of the followers against "each other.

Each ofthe followers 5, 6 is made witli The engaging facesl lateral trunnions 10 at their vlower ends and against each other takes place This is {ley 'sirable to cushionlight jars vand strains.

The draft irons 3 are provided with shoull i ders 12 to be struck by the followers 6 and limit their movement. i

' The operation of the device 'is as follows :'-v

The followers of one set move for the forward `action or pull and the other set take the buffing-strains.

lowers 5 will rest against thec lugs -11 under them, and the trunnions on the followers 6 Normally Vthe trunnions on folwill. bear upwardly against the bearings 14, as In the bufling action, the draw'bar of the coupling pressin against'the follower 5, will first move' the fo owers 5 and 6 at this'endof the yoke, back horizontally to .the position shown in Fig. 6 to effect a preliminary movement of the spring. v When the trimnions 10 on follower 6 contact'with the lugs 11 behind them, and the trunnions on the follower 5 contact with thebearings.

Y'1 4 above them, subsequent rearward movement of the draw bar will canse then er endsof the followers to move through di erent arcs as the followers turn on the bearings 11;. and lli'which 'are spaced apart, and the contacting' faces .of4 the followers' will move' against eachother. The resistance of the ring (the .rear end of which bears against vfriction'.between the moving follwers'u'ntil ,the follower 6 contacts. with the shoulders -12 on the d raft irons', at which time they will be disposed at approximately .the same angle asI thefrear followers, as shown inaFig. 7. On

I 0 5 e then stationary rear followers) will ycreate` IIO being released, the followers will be returned coupling, will move rearwardly toward theA i fulcrum of the latter on the bearings 14, and

, those that contact with each other.

the point of contact of the s ring with the follower 6 will move rearwar ly away from the fulcrum Aof the latter on the lugs 11. This arrangement allows the movements of the sprin(lr to be made greater than the movement oftthe coupling and results in a largely increased resistance to the action of the coupling toward the end of the. movement.

The contacting surfaces of the'followers, which may or may not be V-shaped, may consist of a number of friction vpieces 13, movably locked in recesses in the wearin faces of the followers as shown in Figs. 4 an 5 or in one of each pair of followers. These loose pieces are in the natura of inserts set loosely ir. cavities or housings in the face of the followers, so that the surfaces, whether they be fiat or V-shaped may adjust themselves readily, one to the other, that is to say But as thefollowers move and the contacting surfaces slide with relation to each other in opposite directions, these pieces will be restricted or not permitted to get out of position by reason of the confines of the cavity'in which they are set in the follower, but by having -some little latitude within this cavity on account of the separation, the surfaces can adjust themselves more readily to each other Y and get a more perfect contact.

.Various slight changes might be resortedto in the relative arrangement of parts shownand described without departing from the spirit and scope of my 'invention hence I would have it understood that I do not wish to limit myself to 4the exact construction of parts shown and described, but,

Having fully described my invention what i I claim as new and desire to secure by Letters- Patent, is z" 5o `1. The combination of contacting frictionv elements movable simultaneously and having pivotal mountings located in proximity to each other, and a resisting spring pressing against said elements.

2. The combination of contactingfriction elements movable together in the same plane,

means for imparting a subsequent pivotal' movement to said elements whereby they will lbe moved relatively to each other and a spring pressing against said friction elements.`

3. T e combination of two contacting friction elements, means affording pivotal mountings for the lower ends of said friction elements and a spring pressing against -said .friction elements.

element against the othe 4. The combination of a draw bar, a yoke and' draft ironsof a. friction element bearing against the draw bar, a second friction elevment contacting with the first mentioned friction element, al spring bearing against the second friction element and means for permitting said elements to turn on pivotal supports located below the same and. supported by the draft irons.

5. The combination of two contacting friction elements normally disposed in an inclined position, means under said elements aording pivotal mountings therefor and a spring pressing one friction element toward the other. A

6. The combination with two contacting friction elements normally disposed in an inclined'position, pivotal mountings for said elements, said mountings being spaced apart and permitting an initial simultaneous movement of said elements and a subsequent pivotalmovement, and a spring pressingone 7. In a friction draft and buffing apparatus, the combination of two sets of fulcrumed contacting friction elements, and an intermediate resisting springbetween them.

8. In a friction draft and buing apparatus, 'the combination of contacting friction elements having fixed fulcrums, anda resisting spring bearing against the said friction elements. Y l 9. In a friction draft and bufng apparal tus, the combination with a yoke, of two sets of friction elements, pivotal bearings for each of said friction elementsl fixed to a part stationary with respect to the yoke and friction elements and a resisting spring between said friction elements.

10. In a friction draft tus, the combination of fulcrumed friction elements, each element having a series of beveledfaces contacting with the other friction element, and a resisting spring bearing against said friction elements.

` 11. In a friction draft and buffing apparatus, the -combination of friction elements having a series of beveled contacting faces, fixed fulcrums for the friction elements, `and a resisting' spring bearing against the` elefacis between them, fixed pivotsfor the frictioii` elements, and a resisting spring between them.

13. `.In a draft and bufling apparatus the and bufling appara-4 ICO.

IIO

combination of contacting friction elemients having simultaneous movement, the contacting faces moving in opposite directions relatively to each other, xed pivotal mountings for said elements and a resisting spring bearing against said friction elements.

14. In a draft and buing apparatus, the

combination of .pivoted or fulcrumedxfricl tion elements, an actuating device contacting with one element, a s ring pressing^ against the other element, said) points of contact being so located relatively to the fulcrums of the elements as to increase the movement transmitted to the spring beyond that ofthe actuating device. "1. -v

15 In a' draft and building-'a paratus, the combination of pivoted or fulhrumed friction elements constructed and mounted so as to have a preliminary longitudinal movement before pivoting, and a resisting spring bearing against the friction elements. I'

16. In a draft andbufling apparatus, the combination of two sets of pivoted or fulcrumed friction elements having a preliminary longitudinal movement before pivoting, and a resisting spring between the pairs of friction elements.

- .f 17. In a draft and bufling apparatus, the

combination with a cou ler, draft irons and a yoke scoured thereto, of) a pair of friction elements at both ends of the yoke one pair bearing against the coupler` and the other against the end 'of the yoke, a coiled spring supported on lugs on the inner friction elements, and 'fixed pivots or fulcrums for all of said friction elements, su ported b the draft irons.

1S. In a raft and uffing ap aratus, the combination with a coupler, an a yoke securedthereto, of a pair of friction elements vat both ends of the yoke, a springr between the pairs of friction elements, draft irons having shoulders to limit the movement of the .friction elements, and carryingirons providing pivots orjfulcrums for' the friction elements.

19. In a draft and bufiin apparatus, the

` combination of fulcrumed e ements, friction devices on the `opposing faces of said elements, said devices having beveled faces and a s ring bearing against the elements.

n testimony whereof., I have signed this specification in th presence of two subscribing witnesses.

Y SAMUEL P. BUSH.. Witnesses: v J. C. WHITRIDGE, NELL Gamma 

